/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.mpp.common.schematree.node;

import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils;
import org.apache.iotdb.tsfile.write.schema.MeasurementSchema;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;

public class SchemaMeasurementNode extends SchemaNode {

    private String alias;
    private MeasurementSchema schema;

    private Map<String, String> tagMap;

    public SchemaMeasurementNode(String name, MeasurementSchema schema) {
        super(name);
        this.schema = schema;
    }

    public String getAlias() {
        return alias;
    }

    public void setAlias(String alias) {
        this.alias = alias;
    }

    public MeasurementSchema getSchema() {
        return schema;
    }

    public Map<String, String> getTagMap() {
        return tagMap;
    }

    @Override
    public void replaceChild(String name, SchemaNode newChild) {
        throw new UnsupportedOperationException(
                "This operation is not supported in SchemaMeasurementNode.");
    }

    @Override
    public void copyDataTo(SchemaNode schemaNode) {
        if (!schemaNode.isMeasurement()) {
            return;
        }
        SchemaMeasurementNode measurementNode = schemaNode.getAsMeasurementNode();
        measurementNode.setSchema(schema);
        measurementNode.setAlias(alias);
    }

    private void setSchema(MeasurementSchema schema) {
        this.schema = schema;
    }

    public void setTagMap(Map<String, String> tagMap) {
        this.tagMap = tagMap;
    }

    @Override
    public boolean isMeasurement() {
        return true;
    }

    @Override
    public SchemaMeasurementNode getAsMeasurementNode() {
        return this;
    }

    @Override
    public byte getType() {
        return SCHEMA_MEASUREMENT_NODE;
    }

    @Override
    public void serialize(OutputStream outputStream) throws IOException {
        ReadWriteIOUtils.write(getType(), outputStream);
        ReadWriteIOUtils.write(name, outputStream);

        ReadWriteIOUtils.write(alias, outputStream);
        schema.serializeTo(outputStream);
        ReadWriteIOUtils.write(tagMap, outputStream);
    }

    public static SchemaMeasurementNode deserialize(InputStream inputStream) throws IOException {
        String name = ReadWriteIOUtils.readString(inputStream);
        String alias = ReadWriteIOUtils.readString(inputStream);
        MeasurementSchema schema = MeasurementSchema.deserializeFrom(inputStream);
        Map<String, String> tagMap = ReadWriteIOUtils.readMap(inputStream);

        SchemaMeasurementNode measurementNode = new SchemaMeasurementNode(name, schema);
        measurementNode.setAlias(alias);
        measurementNode.setTagMap(tagMap);
        return measurementNode;
    }
}
